Objective: Set-up work, aero optimisation and slick tyre development in preparation for 2009.

Weather: Cold all day. Average air temperature: 9C

Sam Michael, Technical Director, Williams F1:

"Today marked the end of our 2008 test programme. Our schedule over recent tests has
focused on set-up work for Bridgestone's slick tyres, consideration of aerodynamic
regulation changes (including the driver-adjustable front flap) and the KERS. Kazuki
also completed a significant number of laps which helps with the three race engine life
required in 2009. We're making good progress and are looking forward to returning to
the test track after the Christmas break with the FW31. Thanks to the test team and
everyone in the factory for all the effort they've put into the interim car over the past few
months."

Kazuki Nakajima:

"These two days at Jerez have been really productive. Unlike last week when the
weather was quite bad, I've covered a lot of mileage with the car which was good for me
as it's allowed me to get used to all the changes. In terms of what we've been testing,
we've worked on set-up and the aero package for next year, but we mainly concentrated
on the slick tyres this week. It is quite interesting to drive on slicks."

Nico Hulkenberg:

"We had a good day on Monday, although getting out on track in the morning was
delayed for quite a long time while we waited for the circuit to dry out. When we did get
out of the garage, we managed to cover everything that we were scheduled to. It was
another informative test with the slick tyres and the new aero package and it was nice to
be back in the car again getting some more mileage under my belt and to be back with
the team."